package com.xhgj.thread;

/**
 * @author 周宇
 * @create 2020-06-27 19:57
 * 模拟龟兔赛跑
 */
public class Race implements Runnable {

    //胜利者
    private String winner;

    @Override
    public void run() {
        for (int i = 0; i <= 100; i++) {
            //模拟兔子休眠
            if (Thread.currentThread().getName().equals("兔子") && i % 50 == 0) {
                try {
                    Thread.sleep(2);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            //判断比赛是否结束
            boolean flag = gameOver(i);
            //如果比赛结束了就停止程序
            if (flag) {
                break;
            }
            System.out.println(Thread.currentThread().getName() + "-->跑了" + i + "步!");
        }
    }

    //判断是否完成比赛
    private boolean gameOver(int steps) {
        if (winner != null) {//已经存在胜利者了
            return true;
        }
        if (steps >= 100) {
            winner = Thread.currentThread().getName();
            System.out.println("winner is " + winner);
            return true;
        }
        return false;
    }

    public static void main(String[] args) {
        Race race = new Race();
        new Thread(race, "乌龟").start();
        new Thread(race, "兔子").start();
    }
}